Genus Larus, Linn.
The members of this genus are distributed over the sea-shores of every part of the globe. Only one species inhabits Australia, to which country it is confined, and where it represents the Larus marinus of Europe and America.
| 557. Larus Pacificus | Vol. VII. Pl. 19. |
Genus Xema, Leach.
A genus of Gulls, the members of which are delicate in their structure, elegant in their appearance, and graceful in all their actions. Many species are found in Europe and America, and others inhabit Africa; one species only has been characterized as Australian, but I believe that another will be found in Torres’ Straits very similar to, but much larger than, the X. Jamesonii of the southern parts of that continent.
| 558. Xema Jamesonii | Vol. VII. Pl. 20. |
Subfamily ——?
Genus Lestris, Ill.
The high latitudes of both the northern and southern hemispheres are frequented by parasitic Gulls.
One species of this form has been found in the Australian seas, and another has been discovered within the Antarctic circle.